<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./07promise.js"></script>
</head>
<body>
    <script>
        let p=new Promise((resolve,reject)=>{  
            setTimeout(() => {
                resolve('action');                
                //throw 'err';//抛出异常                 
                //reject('err');
            }, 1000);
                           
        });
        //console.log(p);
        const res=p.then(value=>{
            console.log(value);
        },reason=>{
            console.warn(reason);
        }); 
        
        p.then(value=>{
            alert(value);
        },reason=>{
            alert(reason);
        });
       
    </script>
</body>
</html>